/**
 *
 */
package com.movitech.mobile.cz.base.common.util.excel;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.net.URLEncoder;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.movitech.mobile.cz.base.common.util.Reflections;
import com.movitech.mobile.cz.base.common.util.excel.annotation.ExcelField;
import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Comment;
import org.apache.poi.ss.usermodel.DataFormat;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.ss.util.CellReference;
import org.apache.poi.xssf.streaming.SXSSFWorkbook;
import org.apache.poi.xssf.usermodel.XSSFClientAnchor;
import org.apache.poi.xssf.usermodel.XSSFRichTextString;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.google.common.collect.Lists;

/**
 * 导出Excel文件（导出“XLSX”格式，支持大数据量导出   @see org.apache.poi.ss.SpreadsheetVersion）
 * @author ThinkGem
 * @version 2013-04-21
 */
public class ExportExcel {

    private static Logger log = LoggerFactory.getLogger(ExportExcel.class);

    /**
     * 工作薄对象
     */
    private SXSSFWorkbook wb;

    /**
     * 工作表对象
     */
    private Sheet sheet;

    /**
     * 样式列表
     */
    private Map<String, CellStyle> styles;

    /**
     * 当前行号
     */
    private int rownum;

    /**
     *列数
     */
    private int headersLength;
    /**
     * 注解列表（Object[]{ ExcelField, Field/Method }）
     */
    List<Object[]> annotationList = Lists.newArrayList();

    /**
     * 构造函数
     * @param title 表格标题，传“空值”，表示无标题
     * @param cls 实体对象，通过annotation.ExportField获取标题
     */
    public ExportExcel(String title, Class<?> cls){
        this(title, cls, 1);
    }

    /**
     * 构造函数
     * @param title 表格标题，传“空值”，表示无标题
     * @param cls 实体对象，通过annotation.ExportField获取标题
     * @param type 导出类型（1:导出数据；2：导出模板）
     * @param groups 导入分组
     */
    public ExportExcel(String title, Class<?> cls, int type, int... groups){
        // Get annotation field
        Field[] fs = cls.getDeclaredFields();
        for (Field f : fs){
            ExcelField ef = f.getAnnotation(ExcelField.class);
            if (ef != null && (ef.type()==0 || ef.type()==type)){
                if (groups!=null && groups.length>0){
                    boolean inGroup = false;
                    for (int g : groups){
                        if (inGroup){
                            break;
                        }
                        for (int efg : ef.groups()){
                            if (g == efg){
                                inGroup = true;
                                annotationList.add(new Object[]{ef, f});
                                break;
                            }
                        }
                    }
                }else{
                    annotationList.add(new Object[]{ef, f});
                }
            }
        }
        // Get annotation method
        Method[] ms = cls.getDeclaredMethods();
        for (Method m : ms){
            ExcelField ef = m.getAnnotation(ExcelField.class);
            if (ef != null && (ef.type()==0 || ef.type()==type)){
                if (groups!=null && groups.length>0){
                    boolean inGroup = false;
                    for (int g : groups){
                        if (inGroup){
                            break;
                        }
                        for (int efg : ef.groups()){
                            if (g == efg){
                                inGroup = true;
                                annotationList.add(new Object[]{ef, m});
                                break;
                            }
                        }
                    }
                }else{
                    annotationList.add(new Object[]{ef, m});
                }
            }
        }
        // Field sorting
        Collections.sort(annotationList, new Comparator<Object[]>() {
            public int compare(Object[] o1, Object[] o2) {
                return new Integer(((ExcelField)o1[0]).sort()).compareTo(
                        new Integer(((ExcelField)o2[0]).sort()));
            };
        });
        // Initialize
        List<String> headerList = Lists.newArrayList();
        for (Object[] os : annotationList){
            String t = ((ExcelField)os[0]).title();
            // 如果是导出，则去掉注释
            if (type==1){
                String[] ss = StringUtils.split(t, "**", 2);
                if (ss.length==2){
                    t = ss[0];
                }
            }
            headerList.add(t);
        }
        headersLength=headerList.size();
        initialize(title, headerList);
    }

    /**
     * 构造函数
     * @param title 表格标题，传“空值”，表示无标题
     * @param headers 表头数组
     */
    public ExportExcel(String title, String[] headers) {
        initialize(title, Lists.newArrayList(headers));
    }

    /**
     * 构造函数
     * @param title 表格标题，传“空值”，表示无标题
     * @param headerList 表头列表
     */
    public ExportExcel(String title, List<String> headerList) {
        initialize(title, headerList);
    }

    /**
     * 初始化函数
     * @param title 表格标题，传“空值”，表示无标题
     * @param headerList 表头列表
     */
    private void initialize(String title, List<String> headerList) {
        this.wb = new SXSSFWorkbook(500);
        this.sheet = wb.createSheet("Export");
        this.styles = createStyles(wb);
        // Create title
        if (StringUtils.isNotBlank(title)){
            Row titleRow = sheet.createRow(rownum++);
            titleRow.setHeightInPoints(30);
            Cell titleCell = titleRow.createCell(0);
            titleCell.setCellStyle(styles.get("title"));
            titleCell.setCellValue(title);
            sheet.addMergedRegion(new CellRangeAddress(titleRow.getRowNum(),
                    titleRow.getRowNum(), titleRow.getRowNum(), headerList.size()-1));
        }
        // Create header
        if (headerList == null){
            throw new RuntimeException("headerList not null!");
        }
        Row headerRow = sheet.createRow(rownum++);
        headerRow.setHeightInPoints(16);
        for (int i = 0; i < headerList.size(); i++) {
            Cell cell = headerRow.createCell(i);
            cell.setCellStyle(styles.get("header"));
            String[] ss = StringUtils.split(headerList.get(i), "**", 2);
            if (ss.length==2){
                cell.setCellValue(ss[0]);
                Comment comment = this.sheet.createDrawingPatriarch().createCellComment(
                        new XSSFClientAnchor(0, 0, 0, 0, (short) 3, 3, (short) 5, 6));
                comment.setString(new XSSFRichTextString(ss[1]));
                cell.setCellComment(comment);
            }else{
                cell.setCellValue(headerList.get(i));
            }
            sheet.autoSizeColumn(i);
        }
        for (int i = 0; i < headerList.size(); i++) {
            int colWidth = sheet.getColumnWidth(i)*2;
            sheet.setColumnWidth(i, colWidth < 3000 ? 3000 : colWidth);
        }
        log.debug("Initialize success.");
    }

    /**
     * 创建表格样式
     * @param wb 工作薄对象
     * @return 样式列表
     */
    private Map<String, CellStyle> createStyles(Workbook wb) {
        Map<String, CellStyle> styles = new HashMap<String, CellStyle>();

        CellStyle style = wb.createCellStyle();
        style.setAlignment(CellStyle.ALIGN_CENTER);
        style.setVerticalAlignment(CellStyle.VERTICAL_CENTER);
        Font titleFont = wb.createFont();
        titleFont.setFontName("Arial");
        titleFont.setFontHeightInPoints((short) 16);
        titleFont.setBoldweight(Font.BOLDWEIGHT_BOLD);
        style.setFont(titleFont);
        styles.put("title", style);

        style = wb.createCellStyle();
        style.setVerticalAlignment(CellStyle.VERTICAL_CENTER);
        style.setBorderRight(CellStyle.BORDER_THIN);
        style.setRightBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
        style.setBorderLeft(CellStyle.BORDER_THIN);
        style.setLeftBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
        style.setBorderTop(CellStyle.BORDER_THIN);
        style.setTopBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
        style.setBorderBottom(CellStyle.BORDER_THIN);
        style.setBottomBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
        Font dataFont = wb.createFont();
        dataFont.setFontName("Arial");
        dataFont.setFontHeightInPoints((short) 10);
        style.setFont(dataFont);
        styles.put("data", style);

        style = wb.createCellStyle();
        style.cloneStyleFrom(styles.get("data"));
        style.setAlignment(CellStyle.ALIGN_LEFT);
        styles.put("data1", style);

        style = wb.createCellStyle();
        style.cloneStyleFrom(styles.get("data"));
        style.setAlignment(CellStyle.ALIGN_CENTER);
        styles.put("data2", style);

        style = wb.createCellStyle();
        style.cloneStyleFrom(styles.get("data"));
        style.setAlignment(CellStyle.ALIGN_RIGHT);
        styles.put("data3", style);

        style = wb.createCellStyle();
        style.cloneStyleFrom(styles.get("data"));
//        style.setWrapText(true);
        style.setAlignment(CellStyle.ALIGN_CENTER);
        style.setFillForegroundColor(IndexedColors.GREY_50_PERCENT.getIndex());
        style.setFillPattern(CellStyle.SOLID_FOREGROUND);
        Font headerFont = wb.createFont();
        headerFont.setFontName("Arial");
        headerFont.setFontHeightInPoints((short) 10);
        headerFont.setBoldweight(Font.BOLDWEIGHT_BOLD);
        headerFont.setColor(IndexedColors.WHITE.getIndex());
        style.setFont(headerFont);
        styles.put("header", style);

        return styles;
    }

    /**
     * 添加一行
     * @return 行对象
     */
    public Row addRow(){
        return sheet.createRow(rownum++);
    }


    /**
     * 添加一个单元格
     * @param row 添加的行
     * @param column 添加列号
     * @param val 添加值
     * @return 单元格对象
     */
    public Cell addCell(Row row, int column, Object val){
        return this.addCell(row, column, val, 0, Class.class);
    }

    /**
     * 添加一个单元格
     * @param row 添加的行
     * @param column 添加列号
     * @param val 添加值
     * @param align 对齐方式（1：靠左；2：居中；3：靠右）
     * @return 单元格对象
     */
    public Cell addCell(Row row, int column, Object val, int align, Class<?> fieldType){
        Cell cell = row.createCell(column);
        CellStyle style = styles.get("data"+(align>=1&&align<=3?align:""));
        DataFormat strFormat = wb.createDataFormat();
        style.setDataFormat(strFormat.getFormat("@"));
        try {
            if (val == null){
                cell.setCellValue("");
            } else if (val instanceof String) {
                cell.setCellValue((String) val);
            } else if (val instanceof Integer) {
                cell.setCellValue((Integer) val);
            } else if (val instanceof Long) {
                cell.setCellValue((Long) val);
            } else if (val instanceof Double) {
                cell.setCellValue((Double) val);
            } else if (val instanceof Float) {
                cell.setCellValue((Float) val);
            } else if (val instanceof Date) {
//                DataFormat format = wb.createDataFormat();
//                style.setDataFormat(format.getFormat("yyyy-MM-dd HH:mm:ss"));
////                cell.setCellValue((Date) val);在excepl中输出后为数字格式：42856.726261574
//                DateFormat formater = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
                cell.setCellValue(val.toString());
            } else {
                if (fieldType != Class.class){
                    cell.setCellValue((String)fieldType.getMethod("setValue", Object.class).invoke(null, val));
                }else{
                    cell.setCellValue((String)Class.forName(this.getClass().getName().replaceAll(this.getClass().getSimpleName(),
                            "fieldtype."+val.getClass().getSimpleName()+"Type")).getMethod("setValue", Object.class).invoke(null, val));
                }
            }
        } catch (Exception ex) {
            log.info("Set cell value ["+row.getRowNum()+","+column+"] error: " + ex.toString());
            if (val != null) {
                cell.setCellValue(val.toString());
            }
        }
        cell.setCellStyle(style);
        return cell;
    }

    /**
     * 添加数据（通过annotation.ExportField添加数据）
     * @return list 数据列表
     */
    public <E> ExportExcel setDataList(List<E> list){
        for (E e : list){
            int colunm = 0;
            Row row = this.addRow();
            StringBuilder sb = new StringBuilder();
            for (Object[] os : annotationList){
                ExcelField ef = (ExcelField)os[0];
                Object val = null;
                try{
                    if (StringUtils.isNotBlank(ef.value())){
                        val = Reflections.invokeGetter(e, ef.value());
                    }else{
                        if (os[1] instanceof Field){
                            val = Reflections.invokeGetter(e, ((Field)os[1]).getName());
                        }else if (os[1] instanceof Method){
                            val = Reflections.invokeMethod(e, ((Method)os[1]).getName(), new Class[] {}, new Object[] {});
                        }
                    }

                    if (StringUtils.isNotBlank(ef.dateFormat())){
                        DateFormat formater = new SimpleDateFormat(ef.dateFormat());
                        if(val!=null)val =formater.format(val);
                    }
                }catch(Exception ex) {
                    log.info(ex.toString());
                    val = "";
                }
                this.addCell(row, colunm++, val, ef.align(), ef.fieldType());
                sb.append(val + ", ");
            }
            log.debug("Write success: ["+row.getRowNum()+"] "+sb.toString());
        }
        return this;
    }

    /**
     * 输出数据流
     * @param os 输出数据流
     */
    public ExportExcel write(OutputStream os) throws IOException{
        wb.write(os);
        return this;
    }

    /**
     * 输出到客户端
     * @param fileName 输出文件名
     */
    public ExportExcel write(HttpServletRequest request,HttpServletResponse response, String fileName) throws IOException{
        response.reset();
        response.setContentType("application/octet-stream; charset=utf-8");
//        response.setHeader("Content-Disposition", "attachment; filename="+Encodes.urlEncode(fileName));
//        response.setHeader("Content-Disposition", "attachment; filename="+fileName);
//        response.setHeader("Content-disposition", "attachment; filename="+new String(toUtf8String("中文.xls").getBytes(), "ISO8859-1"));
        final String userAgent = request.getHeader("USER-AGENT");
        String finalFileName = null;
        if(StringUtils.contains(userAgent, "MSIE")){//IE浏览器
            finalFileName = URLEncoder.encode(fileName,"UTF8");
        }else if(StringUtils.contains(userAgent, "Mozilla")){//google,火狐浏览器
            finalFileName = new String(fileName.getBytes(), "ISO8859-1");
        }else{
            finalFileName = URLEncoder.encode(fileName,"UTF8");//其他浏览器
        }

        response.setHeader("Content-Disposition", "attachment; filename=" +  finalFileName );
        write(response.getOutputStream());
        return this;
    }

    public static String toUtf8String(String s){
        StringBuffer sb = new StringBuffer();
        for (int i=0;i<s.length();i++){
            char c = s.charAt(i);
            if (c >= 0 && c <= 255){sb.append(c);}
            else{
                byte[] b;
                try { b = Character.toString(c).getBytes("utf-8");}
                catch (Exception ex) {
                    System.out.println(ex);
                    b = new byte[0];
                }
                for (int j = 0; j < b.length; j++) {
                    int k = b[j];
                    if (k < 0) k += 256;
                    sb.append("%" + Integer.toHexString(k).toUpperCase());
                }
            }
        }
        return sb.toString();
    }

    /**
     * 输出到文件
     * @param name 输出文件名
     */
    public ExportExcel writeFile(String name) throws FileNotFoundException, IOException{
        FileOutputStream os = new FileOutputStream(name);
        this.write(os);
        return this;
    }

    /**
     * 清理临时文件
     */
    public ExportExcel dispose(){
        wb.dispose();
        return this;
    }

    public <E> ExportExcel setCallFooterData(List<E> list) {
        Row footerRow = sheet.createRow(rownum++);
        footerRow.setHeightInPoints(20);
        addCell(footerRow, 0,list.get(0), 2, Class.class);
        sheet.addMergedRegion(new CellRangeAddress(footerRow.getRowNum(), footerRow.getRowNum(), 0, 1));
        for (int i = 1; i < list.size(); i++) {
//            footerCell = footerRow.createCell(i+2);//已经合并了两列
//            footerCell.setCellValue((String) list.get(i));
            addCell(footerRow, i + 1, list.get(i), 2, Class.class);
        }
        return this;
    }


    /**
     * @return list 数据列表
     */
//    public <E> ExportExcel setQualifiedSupplerDataList(List<E> list){
//        setDataList(list);
//        return this;
//    }

    public <E> ExportExcel setDataList(List<E> list, E e1) {
        setDataList(list);
        int colunm = 0;
        Row row = this.addLastRow();
        StringBuilder sb = new StringBuilder();
        int index = 0;
        for (Object[] os : annotationList) {

            ExcelField ef = (ExcelField) os[0];
            Object val = null;
            // Get entity value
            try {
                if (StringUtils.isNotBlank(ef.value())) {
                    val = Reflections.invokeGetter(e1, ef.value());
                } else {
                    if (os[1] instanceof Field) {
                        val = Reflections.invokeGetter(e1, ((Field) os[1]).getName());
                    } else if (os[1] instanceof Method) {
                        val = Reflections.invokeMethod(e1, ((Method) os[1]).getName(), new Class[] {}, new Object[] {});
                    }
                }
            } catch (Exception ex) {
                // Failure to ignore
                log.info(ex.toString());
                val = "";
            }
            if (index <= 1) {
                val = "合计";
            }
            this.addCell(row, colunm++, val, ef.align(), ef.fieldType());
            sb.append(val + ", ");
            index++;
        }
        return this;
    }

    public <E> ExportExcel setDataListSum(List<E> list) {
        E e1=list.remove(list.size()-1);
        setDataList(list);
        int colunm = 0;
        Row row = this.addLastRow();
        StringBuilder sb = new StringBuilder();
        int index = 0;
        for (Object[] os : annotationList) {

            ExcelField ef = (ExcelField) os[0];
            Object val = null;
            // Get entity value
            try {
                if (StringUtils.isNotBlank(ef.value())) {
                    val = Reflections.invokeGetter(e1, ef.value());
                } else {
                    if (os[1] instanceof Field) {
                        val = Reflections.invokeGetter(e1, ((Field) os[1]).getName());
                    } else if (os[1] instanceof Method) {
                        val = Reflections.invokeMethod(e1, ((Method) os[1]).getName(), new Class[] {}, new Object[] {});
                    }
                }
            } catch (Exception ex) {
                // Failure to ignore
                log.info(ex.toString());
                val = "";
            }
            if (index <= 1) {
                val = "合计";
            }
            this.addCell(row, colunm++, val, ef.align(), ef.fieldType());
            sb.append(val + ", ");
            index++;
        }
        return this;
    }

    public <E> ExportExcel setMergedRegionDataList(List<E> list,final Integer[] mergeBasis, final Integer[] mergeCells,final Integer[] sumCells){
        setDataList(list);
        if(mergeBasis != null && mergeBasis.length > 0 && mergeCells != null && mergeCells.length > 0){
            for(int i = 0 ; i < mergeCells.length ; i++){
                mergedRegion(sheet,mergeCells[i],2,sheet.getLastRowNum(),wb,mergeBasis);
            }
        }
        if(sumCells != null && sumCells.length > 0){
            createSumRow(sheet,headersLength,sumCells);
        }
        return this;
    }

    private static void mergedRegion(Sheet sheet, int cellLine, int startRow, int endRow, Workbook wb, Integer[] mergeBasis) {
//        CellStyle style = wb.createCellStyle();           // 样式对象
//        style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);  // 垂直
//        style.setAlignment(HSSFCellStyle.ALIGN_CENTER);             // 水平
//        CellStyle style = wb.createCellStyle();
//        style.setAlignment(CellStyle.ALIGN_CENTER);
//        style.setVerticalAlignment(CellStyle.VERTICAL_CENTER);
        String s_will = sheet.getRow(startRow).getCell(cellLine).getStringCellValue();  // 获取第一行的数据,以便后面进行比较
        int count = 0;
        Set<Integer> set = new HashSet<Integer>();
        CollectionUtils.addAll(set, mergeBasis);
        for (int i = startRow+1; i <= endRow; i++) {
            String s_current = sheet.getRow(i).getCell(cellLine).getStringCellValue();
            if (s_will.equals(s_current)) {
                boolean isMerge = true;
                if(!set.contains(cellLine)){//如果不是作为基准列的列 需要所有基准列都相同
                    for(int j = 0 ; j < mergeBasis.length ; j++){
                        System.out.println(">>>>>>>export<<<<<<<"+sheet.getRow(i).getCell(mergeBasis[j]).getStringCellValue());
                        System.out.println(">>>>>>>export<<<<<<<"+sheet.getRow(i-1).getCell(mergeBasis[j]).getStringCellValue());
                        if(!sheet.getRow(i).getCell(mergeBasis[j]).getStringCellValue()
                                .equals(sheet.getRow(i-1).getCell(mergeBasis[j]).getStringCellValue())
                                ||!sheet.getRow(i).getCell(1).getStringCellValue()
                                .equals(sheet.getRow(i-1).getCell(1).getStringCellValue())){
                            isMerge = false;
                        }
                    }
                }else{//如果作为基准列的列 只需要比较列号比本列号小的列相同
                    for(int j = 0 ; j < mergeBasis.length && mergeBasis[j] < cellLine ; j++){
                        System.out.println(j+">>>>>>>export<<<<<<<"+i+sheet.getRow(i).getCell(mergeBasis[j]).getStringCellValue());
                        System.out.println(">>>>>>>export<<<<<<<"+sheet.getRow(i-1).getCell(mergeBasis[j]).getStringCellValue());
                        if(!sheet.getRow(i).getCell(mergeBasis[j]).getStringCellValue()
                                .equals(sheet.getRow(i-1).getCell(mergeBasis[j]).getStringCellValue())
                                ||!sheet.getRow(i).getCell(1).getStringCellValue()
                                .equals(sheet.getRow(i-1).getCell(1).getStringCellValue())){
                            isMerge = false;
                        }
                    }
                    if(cellLine==0&&i>startRow){
                        if(!sheet.getRow(i).getCell(1).getStringCellValue()
                                .equals(sheet.getRow(i-1).getCell(1).getStringCellValue())){
                            isMerge = false;
                        }
                    }
                }
                if(isMerge){
                    count++;
                }else{
                    sheet.addMergedRegion(new CellRangeAddress( startRow, startRow+count,cellLine , cellLine));
                    startRow = i;
                    s_will = s_current;
                    count = 0;
                }
            } else {
                sheet.addMergedRegion(new CellRangeAddress( startRow, startRow+count,cellLine , cellLine));
                startRow = i;
                s_will = s_current;
                count = 0;
            }
            if (i == endRow && count > 0) {
                sheet.addMergedRegion(new CellRangeAddress(startRow,startRow+count ,cellLine , cellLine));
            }
        }
    }

    private static void createSumRow(Sheet sheet ,int headersLength, final Integer[] sumCells){
        Row row=sheet.createRow(sheet.getLastRowNum()+1);
        for (int i = 0; i < headersLength; i++) {
            Cell cell = row.createCell(i);
        }
        for(int i = 1 ; i < sheet.getLastRowNum() ; i++){
            for(int j = 0 ; j < sumCells.length ; j++){
                sheet.getRow(i).getCell(sumCells[j]).setCellValue(Double.parseDouble(sheet.getRow(i).getCell(sumCells[j]).getStringCellValue()));
            }
        }
        Cell sumCell = row.getCell(0);
        sumCell.setCellValue("合计");
        String sumFunctionStr = null;
        for(int i = 0 ; i < sumCells.length ; i++){
            sumFunctionStr = "SUM("+ CellReference.convertNumToColString(sumCells[i])+"2:"+CellReference.convertNumToColString(sumCells[i])+sheet.getLastRowNum()+")";
            row.getCell(sumCells[i]).setCellFormula(sumFunctionStr);
        }
    }



    /**
     * 单元格
     * @param row 添加的行
     * @param column 添加列号
     * @param val 添加值
     * @param align 对齐方式（1：靠左；2：居中；3：靠右）
     * @return 单元格对象
     */
    public Cell addSupplierCell(Row row, int column, Object val, int align, Class<?> fieldType){
        Cell cell = row.createCell(column);
        CellStyle style = styles.get("data"+(align>=1&&align<=3?align:""));
        DataFormat strFormat = wb.createDataFormat();
        style.setDataFormat(strFormat.getFormat("@"));
        //详情内容格式重置
        if(column==4 && val!=null && val!=""){
            style.setWrapText(true);//自动换行
            sheet.setColumnWidth(column, 20*256);
        }else{
            sheet.setColumnWidth(column, 20*256);
        }
        row.setHeightInPoints(30);
        try {
            if (val == null){
                cell.setCellValue("");
            } else if (val instanceof String) {
                cell.setCellValue((String) val);
            } else if (val instanceof Integer) {
                cell.setCellValue((Integer) val);
            } else if (val instanceof Long) {
                cell.setCellValue((Long) val);
            } else if (val instanceof Double) {
                cell.setCellValue((Double) val);
            } else if (val instanceof Float) {
                cell.setCellValue((Float) val);
            } else if (val instanceof Date) {
                DataFormat format = wb.createDataFormat();
                style.setDataFormat(format.getFormat("yyyy-MM-dd HH:mm:ss"));
//                cell.setCellValue((Date) val);在excepl中输出后为数字格式：42856.726261574
                DateFormat formater = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
                cell.setCellValue(formater.format(val));
            } else {
                if (fieldType != Class.class){
                    cell.setCellValue((String)fieldType.getMethod("setValue", Object.class).invoke(null, val));
                }else{
                    cell.setCellValue((String)Class.forName(this.getClass().getName().replaceAll(this.getClass().getSimpleName(),
                            "fieldtype."+val.getClass().getSimpleName()+"Type")).getMethod("setValue", Object.class).invoke(null, val));
                }
            }
        } catch (Exception ex) {
            log.info("Set cell value ["+row.getRowNum()+","+column+"] error: " + ex.toString());
            if (val != null) {
                cell.setCellValue(val.toString());
            }
        }
        cell.setCellStyle(style);
        return cell;
    }

    /**
     * 添加最后一行，第一、第二列合并
     *
     * @return 行对象
     */
    public Row addLastRow() {
        // 合并单元格
        CellRangeAddress cra = new CellRangeAddress(rownum, rownum, 0, 1); // 起始行,
        // 终止行,
        // 起始列,
        // 终止列
        sheet.addMergedRegion(cra);
        Row row = sheet.createRow(rownum++);
        row.createCell(0).setCellValue("合计");
        return row;
    }
}
